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LTC690 Datasheet(PDF) 7 Page - Linear Technology

Part # LTC690
Description  Microprocessor Supervisory Circuits
PDF  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC690 Datasheet(HTML) 7 Page - Linear Technology

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7
LTC690/LTC691
LTC694/LTC695
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
VOUT vs IOUT
LOAD CURRENT (mA)
0
4.90
4.95
5.00
40
690 G01
4.85
4.80
4.75
10
20
30
50
SLOPE = 5
Ω
VCC = 5V
VBATT = 2.8V
TA = 25°C
Power Failure Input Threshold
vs Temperature
TEMPERATURE (
°C)
–50
1.304
1.306
1.308
25
75
690 G03
1.302
1.300
–25
0
50
100
125
1.298
1.296
1.294
VCC = 5V
VOUT vs IOUT
LOAD CURRENT (
µA)
0
2.76
2.78
400
690 G02
2.74
2.72
100
200
300
500
2.80
VCC = 0V
VBATT = 2.8V
TA = 25°C
SLOPE = 125
Ω
Reset Active Time
vs Temperature LTC690-1
TEMPERATURE (
°C)
–50
54
56
58
25
75
690 G04
52
50
–25
0
50
100
125
48
46
VCC = 5V
Reset Active Time
vs Temperature LTC694-5
TEMPERATURE (
°C)
–50
216
224
232
25
75
690 G05
208
200
–25
0
50
100
125
192
184
VCC = 5V
Reset Voltage Threshold
vs Temperature
TEMPERATURE (
°C)
–50
4.64
4.65
4.66
25
75
690 G06
4.63
4.62
–25
0
50
100
125
4.61
4.60
Power-Fail Comparator
Response Time
TIME (
µs)
0
4
5
6
4
690 G07
3
2
0
12
3
5
1
1.305V
1.285V
8
7
6
VCC = 5V
TA = 25°C
+
–
VPFI
1.3V
PFO
30pF
VPFI = 20mV STEP
Power-Fail Comparator
Response Time
TIME (
µs)
0
4
5
6
40
690 G08
3
2
0
20
60
1
1.315V
1.295V
120
100
80
VPFI = 20mV STEP
180
160
140
VCC = 5V
TA = 25°C
+
–
VPFI
1.3V
PFO
30pF
Power-Fail Comparator Response
Time with Pull-Up Resistor
TIME (
µs)
0
4
5
6
4
690 G09
3
2
0
2
6
1
1.315V
1.295V
12
10
8
VPFI = 20mV STEP
18
16
14
VCC = 5V
TA = 25˚C
+
–
VPFI
1.3V
PFO
30pF
10k
5V



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